Characteristics of Life Flashcards
What is a tissue
A group of cells that perform a common function
What is an organ
A group of tissues that perform a common function
What is an organ system
A group of organs that perform a common function
What are the characteristics of life
Movement Respiration Sensitivity Growth Reproduction Excretion Nutrition
Movement
Action by an organism or part of an organism causing a change in position or place
Respiration
Releasing energy in cells
Sensitivity
Organism is able to react and are aware of surroundings
Growth
A permanent increase in size by an increase in a number of cells and tissues
Reproduction
Reproducing offspring to keep the species not drying out
Excretion
The removal of harmful substances which can damage/ kill living cells
Nutrition
Intake of nutrients and energy for respiration and growth
5 kingdoms
Plants Animals Fungi Protoctists Bacteria (prokaryotes)
Plants (4)
Multicellular
Cells have chloroplasts
Cell was made of cellulose
Stores glucose as starch
Animals (5) two types of them
Multicellular Stores sugar as glycogen No cell walls Don't contain chloroplasts Have a nervous system
Vertebrates - have back bones
Invertebrates - lack a back bone
Fungi (6)
Multicellular/ unicellular Cells wall made of chitin Made of fibres called mycelium Feed by saprophytic nutrition using extracellular enzymes Store carbohydrates as glycogen Don't contain chloroplasts
